Radial Engineering StageBug SB-6 Manual

Radial Engineering Ikke kategoriseret StageBug SB-6

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Thank you for purchasing your very own StageBug SB-6 signal line isolator! Although the
SB-6 is easy to use, please take a minute to read this short manual. It will give you insight
on how to get the most out of your Radial product. If you have any questions, feel free to
drop us a note at info@radialeng.com and we will do our best to reply in short order.
The SB-6 is a passive audio isolator designed to be inserted into the signal chain to block
hum and buzz caused by ground loops. The SB-6 accepts both unbalanced or balanced
signals and is equally suitable for electric guitar, stereo keyboard, consumer electronics and
professional line-level devices. The two channels operate independently for dual mono or
stereo and since the circuit is passive, no power is required. Whether you are connecting an
unbalanced or balanced signal, the SB-6 will automatically convert the signal depending on
the type of cable and connector you are using. You simply plug in and start enjoying!
MAKING CONNECTIONS
As with any audio system, it is good practice to turn volume levels down or audio systems off
to prevent plug-in transients from damaging more sensitive components such as loudspeakers
and headphones. Begin by setting all four SB-6 switches to their outward positions.
Depending on the type of cable you use, the SB6 will automatically enter into either a
balanced or unbalanced mode.
• When interfacing musical instruments such as
guitars, keyboards and other unbalanced
signals, connect to-and-from the SB-6 using
standard ¼” TS (tip/sleeve) cables.
• When connecting consumer audio devices such
as CD or DVD players, connect to-and-from the
SB-6 using an RCA to ¼” adaptor cable.
• If using the headphone output from a laptop,
smart phone or tablet, connect to-and-from the
SB-6 using an a stereo ‘Y’ cable with 3.5 mini
TRS jack at one end and left/right ¼” jacks at the
other.
• Balanced signals usually come in the form of
XLR or ¼” TRS connectors. If you wish to retain
the balanced format, the SB-6 requires ¼” TRS
input and output connectors.
USING THE -15dB PAD SWITCH
A pad is essentially a resistive circuit that reduces the sensitivity at the input to enable more
powerful signals to be used without causing the transformers to saturate and add distortion. If
you hear distortion, try depressing the PAD switch. This will reduce the sensitivity by -15 dB.
USING THE GROUND LIFT
The SB-6 is equipped with a ground lift switch that disconnects the audio signal ground
between the input and output for full isolation. If you encounter noise, try pushing the
left/right ground lift switches to the inward position.
USING THE LEFT PHASE REVERSE
The SB-6 is equipped with a 180° polarity reverse switch that inverts the phase of the LEFT
channel when depressed. You can use it to phase align a stereo signal or prevent phase
cancellation when driving two guitar amps.
FILT E R LEVEL FILT E R LEVELDRIVE DRIVE
High-Z Stereo Effect PedalsSB-6 Isolator
Amp-2
FILT E R LEVEL FILT E R LEVELDRIVE DRIVE
Amp-1
®
HIGH LOW FILTER
TOP END
BRIGHT
FLAT
DARK
TM
OUTPU T
LEVEL-2 DR IVE-2
LEVEL-1 DR IVE-1
INSERT
12AX7
TUBE
DRIVE
CH.1 INTERME DIATE DRIV E
TOG GL E
15VDC · 40 0 mA
HIGH
MED
12dB
7dB
INPUT
TRUE BY PASS
LOWOUT
2
MID BOOST
DRIVE GAIN
1
21Made in Canada
FILTER LE V E L DRIVE DRIVE
UNBALANCED
ISOLATED
180° PHASE
USING THE SB-6 TO ISOLATE HI-Z GUITAR SIGNALS
Connecting two guitar amps to a stereo effect pedal often causes severe hum and buzz caused
by ground loops. To eliminate the noise insert the SB-6 after the stereo effect pedal with
standard ¼” guitar cables. The SB-6 will isolate the ground loop and eliminate the problem.
USING THE SB-6 TO ISOLATE BALANCED LINES
Often when interfacing equipment that is distanced far apart, such as a mixer and digital audio
recorder, the devices will derive their AC power from different legs on the AC distribution box.
This can often lead to ground loops and excessive system noise. Use the SB-6 to isolate the
two devices by inserting it in between with balanced cables. The SB-6 introduces a magnetic
bridge that blocks stray DC current (noise) and isolates the ground loop.
SENDING A BALANCED LINE OUTPUT TO A LAPTOP
A common challenge is interfacing a professional balanced audio device with an unbalanced
device like a laptop or hand-held recorder. These kind of consumer devices are easily
overloaded and running long unbalanced cables to them can introduce noise. To convert the
signal use balanced cables to connect the output of the mixer to the SB-6 and unbalanced
cables to connect the input of the digital recorder. To deliver a safe signal level to your
unbalanced device depress the -15dB PAD switch. The PAD reduces the input sensitivity and
prevents overload.
BALANCED UNBALANCED
DJ Mixer Source
PA System SB-6 Isolator
SHORT
CABLES
LONG
CABLES
BALANCEDBALANCED
SB-6 Isolator PA Mixing ConsoleRecorder
BALANCEDUNBALANCED
SHORT
CABLES
LONG
CABLES
SB-6 Isolator PA Mixing ConsoleRecorder
CONNECTING THE UNBALANCED OUTPUT FROM A DJ MIXER TO A CONSOLE
Unbalanced DJ mixers can often introduce hum and buzz when connected to a balanced PA
system due to ground loops and long cables. To eliminate the noise connect the output of the
DJ mixer to the SB-6 with unbalanced cables. To run long cables to the PA system connect the
output of the SB-6 to the PA system with balanced cables up to 100 meters (300’).
To view the 3-year transferable warranty details and
product specifications please visit www.radialeng.com
StageBug™ SB-6 Stereo Line Isolator
USER GUIDE

Produkt Specifikationer

Mærke: Radial Engineering
Kategori: Ikke kategoriseret
Model: StageBug SB-6

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